Improvement in speed-regulators



N.AI.I.MEEE. SPEED REGULATOR..

Patented June zo. 1876.

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v N-FETERS, PHOTO'IJTHOGRAPHER. WASHINGTON, D CV v .l TTED STATESNATHANIEL U. METZ, OF N ORRITONVILIJE, PENNSYLVANIA. l

IMPROVEMENT IN'SPEED-REGULATORS.

Specification forming part of Letters Patent No. 178,943, datedvJ une20, 1876; application filed February 28, 1876.

To all whom it may concern:

. friction of which is made to move out brakeshoes with great forceagainst the iiange, to arrest the motion of the shaitin case the beltruns off, or the engine or other power runs too fast for any cause.

Figure l is a section through the ange of the stationary` disk. Fig. 2is a front elevation oi' theregulator. Fig. 3 is a sectional elevationof Fig.` 1, takenon line ww; and Fig. 4 is a section on line y y.

Similar letters of reference indicate corresponding parts. .y

A represents the disk, which revolves with the driving-shaft B. C is theflange of the stationary disk D, on which the brake-shoes E are made-towork by the. centrifugal levers F, which are pivoted to the outer endsot' bar G, which revolves with disk A, but is free to fall back alittle,being titted loosely on the shaft and connected to the disk by thespring H. The levers are connected torock-lever I on bar'G by rods J,and the rock-lever has a spring, K, and an adjusting-stud, L, by whichit is set so as to hold the levers with more orless force against theirtendency to ly outward, thus adjusting them for different speeds. Thecentrifugal levers have a brakepad, M, which touches the flange C whenthe disconnected.

limit of speed `is reached, and the friction thus caused makes bar Gturn back on shaft B relatively to the speed of disk, which throws outthe brakes E by the rods N with great force, so that the machine cannotrace, even though the whole load be instantaneously contact with theflange their friction keeps the levers out, when the motion falls belowthat necessary to bring them out in the first place.

The shoes E are contrived so as to slide to and from the ilanges andmake the contact of the Whole of bearing-surface, and the rods N areconnected to them by screwing in and out of a stud, O, to compensate forthe wear on the face.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In speed regulators, the bar G, having the pivotedweights at each end, connected with the revolving disk A by a spring, H,and placed loosely on shaft, as and for the purpose specified.

2. The spring K, adjusting-stud L, rocklever. I, and rods J, incombination with the' centrifugal levers F and bar G, substantially vasspecin'ed.

3. 'Ihe combination of brakes E and rods N with the bar G, centrifugallevers F, stationary disk D C, and the revolving disk A, substantiallyas specified.

NATHANIEL U. METZ. v Witnesses:

T. B. MosuEE, ALEX. F. ROBERTS.

When the pads M come inV

